T66XXXA✓ Billable
Radiation sickness, unspecified, initial encounter
Code Hierarchy
┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├T66-T78Other and unspecified effects of external causes (T66-T78)├T66Radiation sickness, unspecified
└T66XXXARadiation sickness, unspecified, initial encounter
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